Crucible used for typographic purposes.



C. WINKLER.

CRUCIBLE USED FOR TYPOGRAPHIC PURPOSES.

APPLICATION FILED MAR. 13| 19H- 92,95, Patented Oct. 30, 1917.

A TTM/V57@ CARL WINKLEB, F BERNE, SWITZERLAND.

CRUCIBLE USED FOB TYPOGRAPHIC PURPOSES.

Specication of Letters Patent.

Application led March 13, 1917. Serial No. 154,559.

l To all whom t may concern:

Be it known that I, CARL WINKLER, a citizen of the Swiss Republic, residing at Berne,

in Switzerland, have inventednew and useful Improvements in Crucibles Used for" T ypographic Purposes, of which the following is a specification.

My invention relates to a crucible used for typographie purposes, particularly for casting stereotype plates and type metal blocks.

According to my invention a cock plug for regulating the outfiow of the metal' proJects in the Crucible itself to such an extent that the appendix, .feeding head or riser formed in the outlet opening of the plug, by turning said plug, is separated from the plate,

or the like, and brought back immediately into the crucible. For this purpose the cockplug is preferably arranged in the bottom of the Crucible, and, indeed, in a recumbent, that is, in a horizontal or inclined position, because then the outlet opening can be so dimensioned that the mold is instantaneously filled, and the best conditions are obtained for the solidifying process for producing plates of homogeneous quality.

Further it has been found to be of eat advantage to render the cock plug tig t in its casingl by lubricating the same with oil or other suitable lubricant, so that the thin molten metal cannot penetrate between the cock-plug and casing. This feature is of great importance in practice, because, without the lubricant, the plug, when sufficiently tightened to prevent the metal from flowing out, cannot be turned.

in the drawing representing the invention by way of example, Figure i shows a cross section of the cock-plug, Fig. 2, a longitudinal section on the line A-B in Fig. l, and Fig. 3, a longitudinal section on C--D in Fig. 1, in which however the lubricant is' distributed in a different way to that shown in Figs. 1 and 2.

a is the horizontal, or approximately horizontal, cock-plug, which is arranged to turn in the wall b of the Crucible, and thus to open and close the opening c forming part of the mold d. The cock-plug is cut away at e to form an outlet opening for the molten metal. In the angular position of the cockplug shown in Fig. l the molten metal in.

the Crucible can iiow freely into the mold d, said opening having, in this case, the same length (Fig. Q) as the mold. The metal in the opening e forms, or exercises the function of the feeding head of so great impor- I tance for obtaining a casting of good quality throughout, and this feeding head is Cut off and returned to the Crucible by simply turnmg the cock-plug a through a small anglein the direction of the hands of a clock (Fig. 1)'.

For the purpose of rendering this plug sufficiently tight for preventing the molten metal from flowing out a bore f (Figs. 1 and 2) is provided in the same to which a lubricant, such as oil, is fed' at g and this lubricant-passes through the channels .7L to the circumference of the plug, which is thus lubricated.

In the construction shown in Fig. 3 there is no bore in the coclcplug itself, but a channel z' is provided in the casing of said plug, that is, in the Wall of the crucible.

'This common channel is connected by chantypographie purposes, of a mold contiguous to said Crucible, a cock-plug mounted in the wall of the crucible and having a cut-away portion arranged to face the interior of the Crucible, and to constitute a portion thereof, said cock-plug being movable to bring the cut-away portion into position to effect communication between the interior of the crucible and the mold.

2. The combination with a Crucible for typographie urposes, of a mold contiguous to said cruci le, a cock-plug having a cutaway portion, said cut-away portion facing the interior of the Crucible andfOrming a part thereof in one position of the cock-plug, said plug being rotatable on the central axis to bring the Cut-away portion in position to eect communication between the interior of the crucible and the mold.

3. lI`he combination with a. Crucible for typographie urposes, of a mold contiguous to said cruci le, a cock-plug having a cutaway portion, said out-away portion facing the interior of the Crucible and forming a part thereof in one position of the cockplug, said plug vbeing rotatable on` its central axis to bring the cut-away portion in position to effect communication between the interior of the Crucible and the mold, and means for simultaneously preventing the enratentea oet. 3o, raie'. f

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ltrance of the molten metal between the Wall of the crucible and the surface of the cockplug and for lubricating the cock-plug.

4. The combination with a Crucible for typographie gui-poses, of a vmold contiguous to said cruci le, a cock-plug having a cutaway portion, said cut-away portion facing the interior of the Crucible and forming a part thereof in one position of the cock-plug, said plug being rotatable on its central aXis to bring the cut-away portion in position to effect communication between the interiorof the crucible and the mold, and means for simultaneously preventing the entrance of the molten metal between the Wall of the Crucible and the surface of the cock-plug and for lubricating the cock-plug, said last named means comprising a film of lubricating oil disposed around the surface of the cock-plug.

5. The combination With a Crucible for typographie purposes, of a mold contiguous to said Crucible, a cylindrical cock-plug havnase ing a cut-away portion, said cut-away portion facing the interior of the Crucible and forming a part thereof in one position of the cock-plug, said plug being rotatable on its central axis to bring the cut-away portion in position to effect communication between the interior of the Crucible and the mold, and means for simultaneously 'preventing the entrance of the molten metal between the wall of the Crucible and the surface of the cook-plugand for lubricating the cock-plug, said last named means comprising a film of lubricating oil disposed around the surface of the cock-plug, and means for feeding the oil to the surface of the cock-plug in any position of the latter.

In testimony whereof l have signed my name to this specification in the presence of the subscribing witness.

CARL WINKLER.

lNitness O. NESENBACH. 

